Home / 74,491.20-102,828.96-49,374.72

Finding the Fourth Proportional to 74,491.20, 102,828.96 and 49,374.72

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Solution

The fourth proportional to 74,491.20, 102,828.96 and 49,374.72 is: 68,157.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,491.20 : 102,828.96 = 49,374.72 : x
  2. Step 2: Convert to fraction form
    74,491.20/102,828.96 = 49,374.72/x
  3. Step 3: Cross multiply
    74,491.20x = 102,828.96 × 49,374.72
  4. Step 4: Simplify right side
    74,491.20x = 5,077,151,107.89
  5. Step 5: Solve for x
    x = 5,077,151,107.89/74,491.20
  6. Step 6: Final answer
    x = 68,157.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.